Anchorage for artificial teeth



F MAEULEN ET AL ANCHORAGE FOR ARTIFICIAL TEETH Filed Nov. 30 1920 ATTORNEYS.

Patented Aug. 7, i923 FREDERICK IHAEULEN, OF BAHWAY, AND GEDR-GE L. VANALLEN, OF NEE/JAKE, NEW

JERSEY, AS SIGNORS TO BAKER dc JERSEY.

COMPANY, INQQA CORPORATION 033 NEW ANCHOR-AGE FOR ARTIFICIAL TEETH.

Application filed November 30, 1920. Serial Ito. 427,342.

T aZZ whom it may concern Be it known that we, FREDERICK MAEULEN andQuentin L. VAN AL EN, citizens of the United States, and residents,respectively, of

Rahway, in the county of Union and State of New Jersey, and Newark, inthe county of Essex and State of New Jersey, have invented new anduseful Improvements in Anchorages for Artificial Teeth, of which thefollowing is a specification.

This invention relates in general to art-ificial teeth and moreparticularly to anchorages for securing the pins ordinarily employed insuch teeth which are used for fastening the teeth to bridges, backing,vulcanite, and the like.

The objects of the invention are to provide improved means for anchoringthe pins in the body of the artificial tooth which is simple andinexpensive and which will at the same time securely hold the pin inposition; to provide an anchorage for such pins comprising a flanged cupmember to receive the pin which provides a large soldering area forsoldering the pin to the cup thereby providing a strong anddurableanchorage for the pin which will effectively withstand the strains towhich such pins are subjected; to provide such an anchorage whereby them pin can be easily applied to an artificial tooth with a minimumexpenditure of time and labor; to provide a pin anchorage for artificialteeth consisting of a sheet metal cup having an integral exteriorannular flange formed of two thicknesses of the sheet metal of which thecup is formed; to provide an anchorage cup having an integral exteriorflange formed by crimping the sides of the cup inwardly into contactwith the bottom thereof whereby the flange is reenforced, the solderingof the pin to the said cup securing the sides of the cup to the base tostrengthen the same; and to obtain other results and advantages as maybe brought out by the following description.

Referring to the accompanying drawing, in which like numerals ofreference indicate the same parts throughout the several views,

Figure 1 is an enlarged vertical sectional view through an artificialtooth showing a pin anchorage embodying our invention mounted therein;

Figure 2 is a longitudinal sectional view through the anchorage cupbefore the annular flange is formed thereon, and

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Figure 3 is a perspective view of the anchorage cup embodying ourinvention.

In the embodiment of our invention illustrated in the drawings, thereference character 1 designates the cup anchorage for a conventionalpin 2 which is used for the purpose of securing an artificial tooth 3 toa bridge, backing, 'vulcanite, or the like. The cup anchorage 1 ispreferably formed of sheet metal and has an integral exterior annularflange 4 at the base thereof, the said flange being formed in anysuitable manner whereby portions of the sides of the cup are upset orcrimped inwardly into contact with the bottom or base 5 thereof, the cupbefore this crimping action takes place being substantially of the shapeshown in Figure 2. It will thus be seen that the annular flange tcomprises two thicknesses of the metal of which the cup is formed so asto be greatly strengthened and reenforced.

The cup 1 is secured in theartiiicial tooth 3, which is formed ofporcelain or the like, by any suitable process such as firing, the cupbeing embedded in the body of the tooth and permanently baked therein.The in terior diameter of the cup is slightly greater than the diameterof the shank of the pin 2 so that the pin will be snugly received withinthe cup.

The pin 2 may be secured in the cup in any of the known ways, as bydropping a piece of solder into the cup, then. heating the facingsuiiiciently to melt the solder and forcing the pin into the cup againstthe solder, the solder being distributed between the end and sides ofthe pin and the cup. It will thus be seen thatan enlarged soldering areais provided within the cup 1, and the pin is securely held within thecup by being soldered to both the base and the sides thereof. The solder6 also reenforces the cup itself by connecting the sides of the cup withthe bottom thereof at the inner edge of the annular flange 4 thuspreventing the sides of the cup from being pulled away from the bottomthereof when strain is exerted on the pin 2. When thus soldered the cup1 and annular flange are substantially as solid as would be the casewere the cup and flange cast integrally with each other.

The flange 4: of the cup and also the outer end thereof provide aneffective anchorage for the pin and positively prevent the cup frombeing pulled out or the tooth body 3,

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and with our improved anchorage for the pin 2 it will be noted that thepin is eflectively secured within the tooth body 3 so as to successfullywithstand any strains to which such pins are ordinarily subjected.

Having thus described our invention, what we claim is: I

1. A pin anchorage for artificial teeth comprising a metal cup having aportion of its side walls pressed inwardly into contact with the bottomof the cupto form an outwardly projecting flange exteriorly of the cup.

2. The combination with an artificial tooth and. a pin to be securedthereln, of a cup member secured in said tooth to receive said pin andhaving a portion of theside walls of the cup pressed inwardly intocontact with the bottom of the cup to form an exterior annular flange onthe cup comprising two thicknesses of the material of which said cup isformed, said flange positively holding the cup member within said tooth.

FREDERICK MAEULEN. GEORGE L. VAN ALLEN.

